Home / 80,180.75-120,268.64-38,091.12

Finding the Fourth Proportional to 80,180.75, 120,268.64 and 38,091.12

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Solution

The fourth proportional to 80,180.75, 120,268.64 and 38,091.12 is: 57,135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,180.75 : 120,268.64 = 38,091.12 : x
  2. Step 2: Convert to fraction form
    80,180.75/120,268.64 = 38,091.12/x
  3. Step 3: Cross multiply
    80,180.75x = 120,268.64 × 38,091.12
  4. Step 4: Simplify right side
    80,180.75x = 4,581,167,198.48
  5. Step 5: Solve for x
    x = 4,581,167,198.48/80,180.75
  6. Step 6: Final answer
    x = 57,135.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.